<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>权限列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
    <el-row>
        <el-col>
            <el-button type="primary">添加角色</el-button>
        </el-col>
    </el-row>
    <el-table
      :data="roleList"
      style="width: 100%"
      border
      stripe>
      <el-table-column
          type="expand"
          width="50">
          <template slot-scope="scope">
            <el-row  :class="['bdbottom', i1 === 0 ? 'bdtop' : '' ]" v-for="(item1,i1) in scope.row.children" :key="item1.id">
              <el-col :span="5">
                <el-tag
                  closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <el-row :class="['bdbottom', i2 === 0 ? 'bdtop' : '' ]" v-for="(item2, i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success"
                      closable @close="removeRightById(scope.row, item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag :class="['bdbottom', i3 === 0 ? 'bdtop' : '' ]" type="warning"
                      v-for="(item3, i3) in item2.children" :key="item3.id"
                      closable @close="removeRightById(scope.row, item3.id)">
                      {{item3.authName}}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
      </el-table-column>
      <el-table-column
          type="index"
          label="序号"
          width="50">
      </el-table-column>
      <el-table-column
          prop="roleName"
          label="角色名称">
      </el-table-column>
      <el-table-column
          prop="roleDesc"
          label="角色描述">
      </el-table-column>
      <el-table-column
          label="操作"
          width="300">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
            <el-button type="warning" icon="el-icon-warning" size="mini"
              @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
      </el-table-column>
    </el-table>
    </el-card>
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="editFormDialogClose">
      <el-tree :data="rightList" :props="rightTreeProps" ref="rightTreeRef" show-checkbox
        node-key="id" default-expand-all :default-checked-keys="defaultKeys">
      </el-tree>
      <span slot="footer" class="dialog-footer">
          <el-button @click="setRightDialogClose">取 消</el-button>
          <el-button type="primary" @click="allotRight">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      roleList: [],
      setRightDialogVisible: false,
      rightList: [],
      rightTreeProps: {
        label: 'authName',
        children: 'children'
      },
      defaultKeys: [],
      currentRoleId: ''
    }
  },
  created () {
    this.getRoleList()
  },
  methods: {
    async getRoleList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败。')
      }
      this.roleList = res.data
    },
    removeRightById (role, rightId) {
      this.$confirm('是否删除该权限?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if (res.meta.status !== 200) {
          return this.$message.error('删除权限失败。')
        }
        this.$message({
          type: 'success',
          message: '删除权限成功!'
        })
        // this.getRoleList()
        role.children = res.data
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消权限删除'
        })
      })
    },
    // getAllRights () {},
    async showSetRightDialog (role) {
      this.currentRoleId = role.id
      // 获取所有权限
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败。')
      }
      this.rightList = res.data
      this.getLeafKeys(role, this.defaultKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafKeys(item, arr)
      })
    },
    setRightDialogClose () {
      this.defaultKeys = []
    },
    async allotRight () {
      const keys = [
        ...this.$refs.rightTreeRef.getCheckedKeys(),
        ...this.$refs.rightTreeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.currentRoleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败。')
      }
      this.$message.success('分配权限成功。')
      this.getRoleList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang='less' scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee
}

.bdbottom {
  border-bottom: 1px solid #eee
}
.el-table {
  margin-top: 7px;
}
</style>
